#include<stdio.h>
#include<sys/types.h>
#include<unistd.h>


int main()
{
  chdir("/home/zxctscl/111_dir");
  FILE *fp=fopen("log.txt","w");
  (void)fp;
  fclose(fp);

  while(1)
  {
    printf("I am a process, pid:%d\n",getpid());
    sleep(1);
  }

  return 0;
}
